When a person invades a conversation (particularly one that has gone on for a while, and often online for better effect) by saying something odd or funny that relates to the most recent of sentences or subjects, but should be unrelated to most of the conversation as a whole.
Social bombing of any sort can be justified with the simple phrase, "I did it for the lulz."
An example of conversationbombing, however not a very good one.
Person 1: ... And so he was like, "You were right there in my room!" So then she was like, "No, I wouldn't be anywhere near your room!"
Person 2: omg like, wow haha Conversationbomber: DO NOT WANT.
The art of conversing with one person through various social networking applications at one time, occasionally mentioning one of the conversations in a separate conversation. As in inception, but in the form of conversation.
converception could be chatting, having a wall to wall, and commenting on a photo on facebook with the same person at the same time.